/**
 *
 */
public class MainClass6 {
    public static void main(String[] args) {
        for (int counter = 0; counter <= 10; counter++) {
            System.out.printf("%d! = %d\n", counter, factorial(counter));
        }
    }

    /**
     * @param number
     * @return long
     * @see chapter07.Recursion01
     */
    public static long factorial(long number) {
        if (number <= 1)
            return 1;
        else
            return number * factorial(number - 1);
    }

}
